<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>内容</title>

    <link rel="stylesheet" href="css/bootstrap.min.css">
    <script src="js/jquery-3.4.1.min.js"></script>
    <script src="js/bootstrap.bundle.min.js"></script>
    <script src="js/bootstrap.min.js"></script>

    <style>
        /* img{
            width: 900px;
            height: 900px;
        } */
    </style>
</head>

<body>
    <!-- 
        内容：作为了解就可以了
     -->
    <p class="h1">h1. Bootstrap heading</p>
    <p class="h2">h2. Bootstrap heading</p>
    <p class="h3">h3. Bootstrap heading</p>
    <p class="h4">h4. Bootstrap heading</p>
    <p class="h5">h5. Bootstrap heading</p>
    <p class="h6">h6. Bootstrap heading</p>

    <h1 class="display-1">Display 1</h1>
    <h1 class="display-2">Display 2</h1>
    <h1 class="display-3">Display 3</h1>
    <h1 class="display-4">Display 4</h1>

    <ul class="list-inline">
        <li class="list-inline-item">列表之一</li>
        <li class="list-inline-item">列表之二</li>
        <li class="list-inline-item">列表之三</li>
    </ul>

    <img src="img/1.jpg" class="img-fluid" alt="Responsive image">

    <hr>

    <table class="table">
            <thead>
              <tr>
                <th scope="col">#</th>
                <th scope="col">First Name</th>
                <th scope="col">Last Name</th>
                <th scope="col">Username</th>
              </tr>
            </thead>
            <tbody>
              <tr>
                <th scope="row">1</th>
                <td>Mark</td>
                <td>Otto</td>
                <td>@mdo</td>
              </tr>
              <tr>
                <th scope="row">2</th>
                <td>Jacob</td>
                <td>Thornton</td>
                <td>@fat</td>
              </tr>
              <tr>
                <th scope="row">3</th>
                <td>Larry</td>
                <td>the Bird</td>
                <td>@twitter</td>
              </tr>
            </tbody>
          </table>
</body>

</html>